# A140097 (b-file synthesized from sequence entry) 1 1 2 1 3 3 4 12 5 60 6 346 7 2218 8 15444 9 115075 10 908155 11 7535185 12 65374018 13 590579575 14 5537249212 15 53742567000 16 538801229874 17 5570060420573 18 59288164937748 19 648934780013375 20 7295904025820975 21 84174136470742517 22 995682428049720830